Attitudes Towards Muslims
"While Americans tend to disagree with the notion that Muslims living in the United States are sympathetic to al-Qaeda, a significant 34% believe they do back al-Qaeda. And fewer than half -- 49% -- believe U.S. Muslims are loyal to the United States.
"Almost four in ten, 39%, advocate that Muslims here should carry special I.D. That same number admit that they do hold some 'prejudice' against Muslims. Forty-four percent say their religious views are too 'extreme.'
"In every case, Americans who actually know any Muslims are more sympathethic."
Hat tip to Daily Kos, where SusanG notes that a key tip in the British airplane plot came from a Muslim informant.